Go to bigyflyco and get these in size 8.
https://www.bigyflyco.com/sculpin-3-detail.htm
I have them in all 3 colors but I find myself fishing olive and black most often. Pretty cheap, very simple and very fishy. Depending on how deep you fish and how fast you want them to sink you may want to put a split shot or two 6in above the fly. Just make sure to get them water logged before you start fishing them otherwise they will not sink and swim properly.